Electric switch.



T. A. C. BOTH.y

ELECTRIC SWITCH.

APPLICATION FILED SEPT. I6, 1910.

l., VQ. Patented Feb. 2,2, 1916.

i@ 3? 5(0 50% @as 60 C). UWE/V702 /1 UUR/VE y VT. A. C. BOTH.

ELECTRIC SWITCH. APPLlcAUoN FILED SEPT. ls. 1910.

1,172,928. Patented Feb. 22,1916.

2 SHEETS-SHEET 2.

WIT/VESSES IN VE )VTR www Specification ci Letters latent.

@riginal application filed July S, w10, Serial No. 57L19G. 'Divided andthis application filed tlepteui'iier is, ieio. sensing.

To all inkom t may concern.'

Be it known that l, Tennis AUGUST CARL Borri, a citizen of the UnitedStates, and a resident of rl ew York, in the county my parentapplication lor mechanical movement i'iled July 9, 571,196.

ln the accompanying drawings showing illustrative embodiments of myinvention, and in which the saine reference numerals refer to similarparts in the several figures, 'figure l is a vertical section through my1910, Serial No.

. electric switch used as a push button switch and in which thereceptacle is formed of tivo complementary and preferably insulatingineinhers; Fig. 2 is a horizontal section substantially on the line 2, 2of Fig. l;

Fig. il is a. 'vertical section substantially on' `3-3 of Fig. 2; Fig. dis a transverse rcrtical section substantially loii the line f .I Fig.l, a. portion of the mechanism shown partly in side elevation for theseingY purposeof better illustration; Figs. 5 and 6 are perspectiveviews of details used in the construction shown in Figs. l. to 4; Fig. iis a detail perspective view of an insulating axle or arbor used in theconstruction shown in l.V to d: inclusive; Fig. 8 is a detailieispective view of the preferred forni of which l preferably use withthe two piece receptacle; Fig. 9 is a detail perspective view or" thecartridge; Fig. 10

is a perspective view ci the locking leve-is;

liig. 1l is fragmentary perspective view of the locking levers showingone means of connecting tlie'lcclring levers together.

lin my present invention l use an insu loting receptacle l formed oitivo members `or halves 2, which are complements ol each other. rihisreceptacle is usually niade out of porcelain and to perniit the easydrawing ci the different portions of the re ceptaeles from the molds lpreferably, thoughV not necessarily, make the two inembers or halves 2,2 identical, so that when Silit'- they are placed together their meetingfaces would be on the line 8, Fig. el, enm4 tirely inclosing theopenings within `which the electric switch is mounted.

The switch movement in this torni otD my invention is very similar tothat shown in my said parent application, but it differs materially inthe manner of mounting the axle or arbor, the driving and drivenineinbers and in the axle or arbor itself, which,

in this forni of niy invention, is 4formed of some insulating materialsuch asporcelain. This insulating axle or arbor 5, Fig. Y, is providedat either end with trunnions 6 and with' a non-circular portion 7, 7,both oi which are preferably, but not necessarily, formed integral withthe insulating axle or arbor 5. It is also provided with a longi--tridge is secured to the receptacle l by any.

suitable means such as by the screws ll, Fig. 'n this forni of inyinvention the driving member l2 is formed of substantially tivo rings13, 13 connected together by nicans of a connecting plate la; one of therings 'i3 is provided with slotted lugs l5, l5 'to which are attachedthe stems i6 and l? of the push buttons i8 and 19, respectively, l? l.This driving member 12 is mounted on the insulating axle or arbor 5 bypassing the saine through the rings lil, i3. l also preferably providethe driven nicniber 20 with two rings 2l, 21, each ring being preferablyprovided with an inwardly extending tongue 22, to within the groove 8 inthe insulating aule or arbor 5, it, oi' course, being understood thatthe rings 2l surround the axle or arbor 5.

til

This arrangement of the tongues 25% and groove 8 is one means 'forpreventing relative rotation between the driven member 2G and theinsulating axle or arbor 5, though other means niay be used, it desired.

Around the insulating axle or arbor arrange the resilient nieniber oi.any approved form, .such for example as a coil spring 23 having ends 24and 25, Fig. 4, which lie on opposite sides of the driven member 20 andthe connecting plate 14 of the driving mem- I In the abottom of thecartridge 9 I mount' vand 36 are normally pressed upward by means of thecoil or other spring 59 engaging with a depending lug 5.3, the same inall respects as in my companion and parent case Serial No. 571,196. Thetwo locking levers 27 and 36 are preferably secured together in anysuitable manner 'to permit their independent rocking movement and yet toinsure that the depression of one of the levers' will also depress theother. I have found in practice that one manner of so securing them isto form 'an opening 55 in one of the levers such for instance as 36 andVform a tongue 56 on the other lever 27, having its end 57 pass throughthe opening 55 in the lever 36 and be bent down as shown in Fig. 11 sothat both levers 27 and 36 will. be pivotally and loosely connectedtogether. While I preferably use two locking levers such as 27 and 36, Imay in some cases use only one such locking lever which would thentemporarily lock thev driven member from'movement in one direction.

Downward pressure upon the push button 18, Fig. 1, will be transmittedto the slottedears 15.of the driving member 12 and will cause theconnecting plate 14 of the driving member to move the end 25 of the coilspring 23 away from the end 24 of the spring which willbe held in theposition shown in Fig. 1 by engaging with the driven member 20 which isheld in the positionl shown in Fig. 1 by means of the tooth 26 upon thelever 27. The-energy will be continued to be stored up in the spring 23until the end 28 of the stem 16 contacts with the end 29 of the lever 27when this lever will be depressed and the tooth 26 freed from the drivenmember 20, permitting the v driven member to snap over into its oppositeposition. The driven member 20 will then be held by the other lockingtooth 52 on the second locking lever 36 until the other push button 18has stored up energy in the spring 23 and its stem 60 engages the end 61of the lever 36 and depresses both levers releasing the locking tooth 52from engagement with the driven member 20 when the driven member, withits axle and movable contacts, will fly over or snap into its oppositeposition.

In the present construction where the axle or arbor 5 is of insulatingmaterial it is not necessary to insulate the movable contact 30 from itand from the base or receptacle 1.

, On the contrary it is merely necessary to secure the movable contactto the insulating arbor. One such means which I have illustrated by wayof example is to provide the movable contact 30 with some non-circularopening, which is preferably formed square to snugly tit over the squareportion 7 ofthe axle orI arbor 5, see Figs. 3 and 4. As I have alsoshown this construction as a double pole Y' push button switch, I usepreferably two such movable contacts 30 and. mount them at either end ofthe insulated arbor or axle 5 by simply sliding them upon the squaredportions 7, 7 after the parts of thev switch movement have 'beenassembled in the cartridge and then locate the trunnions 6, 6 withintheir respective apertures 10, 10 which securely and economically holdmovable contacts 30, 30.l

The arms '31 and 31 of the movable contact 30 are preferably bifurcateolto receive between them the fixed contacts 32 and 33 carried by thebinding posts 34 and 35,-the same being in all respects similar to thoseshown in my parentco-pending application.

In the operation of this construction, the

'10, through the tongues 22 and groove 8,

and consequently this insulating-axle or arbor 5 has a limited rockingmovement within the recesses or apertures 10, 10 in the members 2, 2,this rocking movement of course being transmitted to the moving con-ltlie tacts 30, 30 to cause them to quickly tnake or break connectionwith the xedcontacts 32, and33, as the case may be; thereby insuring inthis device as well as in all the others a quick make of the current,-aswell -as a quick break of it without arcing.

The two halves or members 2, 2 are quickly assembled and held togetherafter the insertion of the electric switch by any suitable means. I havefound in practice that a very quick and eliicient method of se-y curingthe two members together is by a plurality of' transverse screws 37 and38, arranged preferably "1n different horizontal planes and extending infrom opposite sidesof the receptacle 1, Fig. 2. By the aid of these samescrews or securing members to vfasten the two halves 2, 2 together, Ialso secure ears 39, Fig. 8, to which a face plate 40, or other elementmay be secured `by means of the screws 41, Fig. 1. These ears consistpreferably, though it is to be under- Y stood that their shape may bevaried without departing from my invention, ofv a body member 42, 'aflange 43 bent at substantially rimase -right angles to the body 42,said flange having a laterally extending member 44 provided with screwthreaded apertures 45, 45 for, the reception of the screws 41, Fig. l.The stems 42 of the earsare preferably located in cut-out or rabbetedportions 46, 46 in the upper portion -of the members 2, 2, see Figs. 1and 2.` The body member 42 is then secured to one of the members 2 byone of the screws; for example screw 37 taking into the upper screwthreaded aperture 47 in the stem 42. A'similar screw 38 isthen passedthrough the other member 2, which will require it being mounted upon theopposite side 0f the receptacle 1 from that which the screw 37 has beeninserted. This second screw 38 is also inserted in a Adiderenthorizontal plane, which for example is shown beneath the screw 37 and,as indicated in dotted .lines in Fig. 2, will take into the lower screwthreaded aperture 48, Fig.y 8 of the ear 39. A similar ear 39 is securedon the opposite side of the receptacle 1 in the same manner, Figs. 1 and2. It will therefore be seen that the same securing mechanism forsecuring the ear 39 to the receptacle will also simultaneously `performthe double purpose of securing the two sections 2, 2 to each other,thereby saving expense in the cost' of manufacture including a saving inthe number of parts and the Acost of labor in assembling them.

Toguide the push buttons 18 and 19 I arrange preferablyv semi-circularconcave bearings 49 and 49 in each of the side menibers 2, Fig. 2. Inaddition thereto 'I may, though not necessarily, place guide slots 50,50 in each member 2, 2 to coperate with guiding lugs 51, 51 located onthe push buttons 18 and 19, or any other suitable guiding means may beused, if desired.

It will be seen that in all forms of my-inventiona very short leverageis required to permit the teeth 26 and 52 to escape from the drivenmember and consequently I can make my switch very shallow which is ofmarked commercial advantage if the switch is to be used either as a pushbutton molding switch, or used with the aid of a bridge piece, asa pushbutton Hush switch, it of similar mechanical expedients, for the movablecontacts are preferably simply slipped over the non-circular or squareportions 7, 7 of the insulating axle 5. 1

Having y'thus described this invention in connection withan'illustrative embodiment thereof to the details of which do not desireto be limited, what is claimed as new and what it is desired to secureby Letters Patent is set forth in the appended claims: 1. ln an electricswitch the combination of a driving memberf a driven member reciprocatedby the driving member; a pivoted lever to temporarily lock the drivenmember against movement in one direction; anda second pivoted lever totemporarily lock the driven member against movement in the otherdirection, said leversbeing rockable independently of each other buteach being ,depressed when the other is depressed.

2. An electric switch consisting of a hollow closed receptacle formed ofcomplementary insulating portions; an axle of insulating materialrotatably mounted on said portions and held by them againstaxialmovement; a lixed contact member; a movable contact member having anon-circular portion in engagement with a non-circular portion of saidaxle so as to be rotated with the latter; a driving member mounted torotate on said axle but free to rotate with relation thereto; adriven'member actuated by the driving member and actuating the 'axle tomove the movable contact; and locking means to temporarily, lock thedriven member.

ToNJEs AUGUST cani. Borri.

" l/Vitnesses: i BENJ. STRAUss, LEON STRAUss.

